AIR CONDITIONING SYSTEM(for Automatic Air Conditioning System) CHECK MODE PROCEDURE

  1. REFRIGERANT SHORTAGE CHECK IN NORMAL OPERATION (CHECK A/C SWITCH INDICATOR AND DTC)

    1. Start the engine.

    2. Check that the A/C switch indicator remains on when the following conditions are met.

      E318547C01

      *A

      for Hatchback, Wagon (for LHD)

      *B

      for Hatchback, Wagon (for RHD)

      *C

      for Sedan (for LHD)

      *D

      for Sedan (for RHD)
      Table 1. Measurement Condition

      Item

      Condition

      A/C switch

      On

      A/C operation time

      15 minutes or more

      Ambient temperature*

      0 to 49°C (32 to 120°F)

      Engine coolant temperature

      45°C (113°F) or more

      *: If the ambient temperature is not within the range shown, do not perform this check.

      Tip:

      The A/C switch indicator and air conditioning system turn off if the amount of refrigerant in the system is insufficient.

    3. Connect the GTS to the DLC3.

    4. Check for DTC B14B8.

      Click here

      Table 2. Result

      Result

      Amount of Refrigerant

      Corrective Action

      DTC B14B8 is output

      Empty or nearly empty

      Check for refrigerant leaks using a halogen leak detector, and repair if necessary.

      Click here

      DTC B14B8 is not output

      Correct or insufficient

      Perform a refrigerant shortage check using the GTS.

  2. REFRIGERANT SHORTAGE CHECK USING GTS

    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Air Conditioner / Utility / Refrigerant Gas Volume Check.

    5. According to the display on the GTS, perform the refrigerant shortage check when the following conditions are met.

      Body Electrical > Air Conditioner > Utility

      Tester Display

      Refrigerant Gas Volume Check
      Table 3. Measurement Condition

      Item

      Condition

      A/C switch

      On

      Ambient temperature*

      0 to 49°C (32 to 120°F)

      Blower speed

      HI

      *: If the ambient temperature is not within the range shown, do not perform this check.

      Tip:

      • Refer to the GTS operator's manual for further details.

      • A message indicating a refrigerant shortage is displayed on the GTS and the air conditioning system turns off if the amount of refrigerant in the system is insufficient.

      • DTCs are not stored when performing the refrigerant shortage check using the GTS.

      Table 4. Result

      Result

      Amount of Refrigerant

      Corrective Action

      Refrigerant shortage

      Insufficient or leakage

      1. Check for refrigerant leaks using a halogen leak detector, and repair if necessary.

        Click here

      2. Evacuate the air conditioning system and charge it with the appropriate volume of new or purified refrigerant.

      Refrigerant correct

      Correct

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